The DirectoryLookupModule enumerator was commented out Prism-V2 drops because its implementation is being refactored. This is because the Modularity approach for
Prism-V2 could have some modifications compared to the one of the first version.
These drops are not completely incremental from Prism-V1. They will most likely undergo modifications until the official release. In the official release, Prism V2 will include all the things from Prism V1, but until that time is reached, there might be some
changes and intermediate backward compatibility breaking changes.
Please let me know if this helps.